/*
 * Copyright (2022) Bytedance Ltd. and/or its affiliates
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#pragma once
#include <bthread/mutex.h>
#include <shared_mutex>

#include <Statistics/StatisticsBase.h>
#include <Statistics/StatsTableIdentifier.h>
#include <boost/noncopyable.hpp>

namespace DB::Statistics
{

struct TableEntry
{
    StatsTableIdentifier identifier;
    StatsData data;
};

using TableEntryPtr = std::shared_ptr<TableEntry>;

struct StatisticsMemoryStore : boost::noncopyable
{
    using UniqueKey = StatsTableIdentifier::UniqueKey;
    std::shared_mutex mtx;
    std::unordered_map<UniqueKey, std::shared_ptr<TableEntry>> entries;
};

}
